Assume the $10,000 treasury bill, 4% for 13 weeks. calculate the effective rate of interest

The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?

What is the y intercept of f(x)=(1/2)^x?

Sundar used linear combination to solve the system of equations shown. he did so by multiplying the first equation by 5 and the second equation by another number to eliminate the y-terms. what number did sundar multiply the second equation by? 2x+9y=41 3x+5y=36